How do I program the Saitek X45?

[gbroido]

I would like to assign a radio command transmit. But it never works. Even though I was successful doing for all the other controls. This one refuse to work.
What do I do?

[beaky]

I don't know if I can be much help, as I've had my share of troubles with my X45, but... which button are you trying to use for that command?